The OP says:
LATEST FW: 5.5.1
EXPLOITABLE FW: 5.3.2, 5.4.0, 5.5.X
Why is the 5.5.X marked with a red color if it's already possible to exploit?
Also, there's this twitter:
https://twitter.com/NWPlayer123/status/727343486333120512
Something smells fishy. Does anyone have more info about this?